Steam-pressure regulator



Sheet 1.

(No Model.)

'J. J. LOWDE-N. STEAM PRESSURE REGULATOR.

No. 469,373. Patented Feb. 23,1892.

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2Sheets Sheet 2.

(No Model.)

, J. J. LOWDEN. STEAM PRESSURE REGULATOR.

Patented Feb. 23, 18921.

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PATENT JAMES J. LO\VDEN, OF. BOSTON, MASSACHUSETTS.

STEAM-PRESSURE REGULATOR.

SPECIFICATION forming part of Letters Patent No. 469,37 3, datedFebruary 23, 1892.

Application filed March 14, 1890.

T0 (0% whom it may concern.-

Be it known that 1, JAMES J. LowDEN, a citizen of the United States,residing at Boston, in the county of Suffolk and State of Massachusetts, have invented certain newand useful Improvements inSteam-Pressure Regulators, of which the following, taken in connectionwith the accompanying drawings, is a specification.

My invention refers to that class of regulators known as steam-pressureor damper regulators for maintaining an even pressure in steanrpipes orfor regulating the dampers of boiler-furnaces bythe pressure of steam inthe boiler; and the invention consists of certain details ofconstruction hereinafter fully described, and pointed out in the claims.

Referring to the accompanying drawings, Figure 1 represents a sideelevation of a steampressure or damper regulator embodying my inventionsupported by a wall-bracket. Fig. 2 is a vertical longitudinal sectionthrough the same. Fig. 3 is a vertical longitudinal section of amodification. Fig. 4. is a vertical longitudinal section through thevalve and union. Fig. 5 shows the regulator supported bya bracket andapplied as a steam-pressure regulator. Fig.6 is a similar view showingthe regulator as applied to a damper-regulator.

A represents a casing or cylinder with the bottom or lower end cast inone therewith and its upper end closed by a cover B, having a sleeve B.In this cylinder A is fitted a piston O, to which is secured apiston-rod D, the upper end of which is provided with an eye cl, towhich the cord or chain for operating the valve or damper is attached.The lower end of the cylinderA is provided with a nozzle, to which oneend of a cook or valve E is secured, and to the other end of the cock issecured a condenser F, which may be a surface-condenser, as shown inFigs. 1 and 2, or a spraycondenser might be employed. G is a pipe foradmitting cold water to the condenser, and 1-1 is an exit-pipe. To thelower end of the condenser is connected a petcock I for carrying off theproducts of condensation from the regulator.

J is a valve-box cast with five openings 1 2 3 4 5, each of which isscrew-threaded. (See Figs. 2 and 4.) Over the opening 1 is placed SerialNo. 343,866- (No model.)

a frame K, having two arms 7.: 7a, to one of which 7t" is fulcrumed alever L, that carries a weight or weights M, and the lever passesthrough a slot in the arm 70. The frame K is held in place (after it hasbeen adjusted to the required position) by a nut N, screwed into theopeningl and having a collar or projecting flange that clamps the frameK in place. The nut is also provided with a hole in its center, throughwhich passes a loose stem 1), the lower end of which rests on the valveP. The valve-box J is connected to the cylinder D by a pipe Q, that canbe screwed into either of the openings 3 or 5, the other being closed bya plug 7, and it is connected to the main steam-pipe by a pipe R, thatcan be screwed into either of the openings 2 or 4, and the other isclosed by a screw-plug 6.

The pistonO is provided in its bottom with one or more small holes a,through which the steam that enters the cylinder-A and the products ofcondensation pass to the condenser F, where the steam is condensed andthe products carried off by the petcock I.

In Fig. 3 I have shown the steam admitted to the cylinderAon the underside of the piston G and the upper end of the cylinder connected to acondenser F byapipe S. In this case I have shown a spray-condenser; buteither a spray or surface condenser may be employed, and to thecylinder-cover B is secured a small bent pipe T, fitted with a stopcockt. This pipe is to admit the required amount of air to the cylinder asthe piston 0 falls, which in this case is lowered by means of weights U,placed upon the upper end of the piston-rod D, which is extended toreceive same.

In Fig. 5 I have shown the regulator employed as a steam-pressureregulator, the piston-rod D being attached to one end of a lever 0) ofvalve V on the main steam-pipe IV by means of a cord or chain X, thatpasses over pulleys Y Y.

In Fig.6 I have shown the regulator as applied to a damper, in whichcase the cord or chain X is connected to the lever z of the damper Z.

In both Figs. 5 and 6 I have shown the cylinder A and condenser F asbeing in the boilerroom and the regulating -valve in the engine-room oroi'fice. It will be seen that while the pressure is controlled by theregulator in the boiler-room the regulating-valve can be arranged inanother room away from the same.

In the drawings I have shown the cylinder A supported by a bracket A Theoperation is as follows: When applied as a steam-pressure regulator, asshown in Fig. 5, the steam passes in the direction of the arrow 8through the valve V in the steampipe \V, and the regulator is connectedto said steam-pipe by a small pipe R on the low-pressure side of thevalve V, and the steam passing up the pipe R enters the regulatorthrough the valve J onto thetop of the piston C, which as the pressureincreases is forced down, and the piston-rod, being connected to theweighted lever o of the valve V by means of the cord X, draws up thelever, thus closing the valve. The steam in the cylinder escapes throughthe small openings 0 in the bottom of the piston 0, thus allowing thepiston to be raised by the weighted lever 42, the valve V being openedaccordingly. The steam passing under the piston 0 forms a cushion andcauses the piston to move steadily and prevents it from being operatedtoo rapidly or by jerks. The steam that passes through the openings 0passes down into the condenser F, where it v is condensed, and theproducts of condensation are carried off by the petcock I. hen appliedas a damper-regulator, as shown in Fig. 6, the action is exactly thesame, only the steam may be taken directly from the steamgenerator bythe pipe R, and the piston-rod D is connected to the leverz of thedamper Z. It will be seen that by this construction steam can beadmitted to the valve-box J by either of the openings 2 or 4: and passto the cylinder A through either of the openings 3 or 5,

the other openings being closed by screwplugs 6 and 7. It will also beseen that the regulator can be placed in the boiler-room and theregulating-valve be located in any desired place or apartment away fromthe regulator, so that the pressure can be adjusted and be under thecontrol of the superintendent or engineer.

\Vhat I claim as my invention is 1. A steam-pressure or damper regulatorconsisting of' a cylinder having a piston-head provided with one or moresmall openings, a valve for regulating the admission of steam, a pipeconnecting said valve and cylinder, and a condenser attached to saidcylinder, substantially as and for the purposes set forth.

2. A steam-pressure or damper regulator consisting of a cylinder A,piston 0, having small holes 0, piston-rod D, valve-box J, and valvePfor regulating the admission of steam to the cylinder, in combinationwith a condenser F for condensing the steam as it passes from thecylinder A, substantially as set forth.

3. In a steam-pressure or damper regulator, the combination of acylinder,a piston provided with one or more small holes, a piston rod,Weights mounted upon said rod, and an air-pipe with a condenser, and avalve for controlling the admission of steam to the cylinder,substantially as set forth.

In testimony whereof .I have signed my name to this specification, inthe presence of two subscribing witnesses, on this 8th day of March, A.D. 1890.

JAMES J. LOWDEN.

\Vitnesses:

CHAS. STEERE, EDWIN PLANTA.

